GMC Instruments Z525G METRALINE PRO-TYP EM II Insulation and Low-Resistance Tester

The GMC Instruments Z525G METRALINE PRO-TYP EM II is a professional insulation and low-resistance tester designed for electrical installation testing and maintenance. It combines multiple measurement functions in a rugged, portable device, making it ideal for electricians, service technicians, and industrial maintenance professionals.

Advantages

This tester offers reliable insulation resistance measurements up to 10 GΩ with selectable test voltages of 50 V, 100 V, 250 V, 500 V, and 1000 V. It also features low-resistance measurement with a test current >200 mA, continuity testing with acoustic signal, and AC/DC voltage measurement up to 600 V. The backlit LCD display ensures readability in low-light conditions, and the device is powered by 6 AA batteries for field use. Safety rated CAT III 600 V / CAT IV 300 V, it complies with IEC 61557-2, IEC 61557-4, and EN 61010-1 standards.

Suitable for

• Electrical installation testing
• Insulation resistance measurement in cables, motors, and transformers
• Low-resistance measurement of contacts and connections
• Voltage detection and continuity checks
• Maintenance of industrial electrical systems

Key specifications

• Measurement Functions: Insulation Resistance, Low-Resistance, Voltage (AC/DC), Continuity
• Insulation Test Voltages: 50 V, 100 V, 250 V, 500 V, 1000 V
• Insulation Resistance Range: 10 kΩ to 10 GΩ
• Low-Resistance Range: 0.01 Ω to 100 Ω
• Test Current (Low-Resistance): >200 mA
• Voltage Measurement Range: 0-600 V AC/DC
• Safety Rating: CAT III 600 V / CAT IV 300 V
• Display: Digital LCD with Backlight
• Power Supply: 6 x 1.5 V AA Batteries
• IP Rating: IP40
• Compliance: IEC 61557-2, IEC 61557-4, EN 61010-1
• Automatic Discharge: Yes, for capacitive loads
• Continuity Test: Yes, with acoustic signal
• Overvoltage Protection: Yes
• Operating Temperature: -10 °C to +50 °C

Recommendations

For comprehensive electrical testing, pair the METRALINE PRO-TYP EM II with compatible test leads and accessories. Always follow safety procedures when working with live circuits.